My heart is breaking

One again it happened. found him messaging some girl and deleting them. so i added her to try to see who she was and i was going to tell her like look he's married just stop but she told him i tried to add her and call me a psycho. really a psycho because you are being a home wrecker. i told him I'm at my breaking point i can't handle it anymore. Honestly  the last thing i want to so is split up it really is.  I'm doing the best i can't to try to keep a happy face i want to talk to people but at the same time i don't. I know the main thing people will say is leave or just bad mouth him and that not going to help me but i also know that none will be able to give me the key that will just fix it all. I'm just so broken he was like my knight and shining armer. i changed everything for him (all for the better) he made me smile he made me be able to handle thing with out feeling the need to drink smoke or self harm. He made me feel like all the bad i had gone threw was finally over and i finally had that one person that was good for me that when they said they love me they really meant it. after many many tears we are going to work on it. we just doing know how. he thinks just deleting his Facebook wil help it but thats not the issue thats just a tool the issue is the face he can do that the fact he even has the though or urge to talk to another female in that way. He use to make my heart skip a beat my legs would go weak after a kiss i would wait to his call or text. now when i see hime i just instantly want to cry.i just want him to love me agin. i want him to be able to hold me and me know that its only me that belongs there. i know its going to take a long time for anything to get better but right now i just hurt so bad.